Corvette Buyers Logo

Home About Photo Gallery Articles Cool Links Email Us

Year 1955 Manual Transmissions 75 Units
Corvette Photos
Year 1964 327 ci / 300 HP 10,471 Units
Corvette Photos
Year 1996 Coupe base Price $ 36,785
Before Buying Your C4 Advice and Tips
Electronic Instrument Panel
Examine the Electronic Instrument Panel. The LCD display should have the same amount of light present across the entire display. (i.e. no part of the display is darker than any other). If not the case, one or more of the four very expensive bulbs in the instrument panel is burned out. The labor involved to replace even one bulb costs a minimum of $100 and all four will cost $200 or more. Observe that there is a trip odometer mileage reading, remaining range and average MPG reading available for display on the Electronic Instrument Display. If not, there are problems with the unit and a potential repair bill of several hundred dollars. (You must verify this later to be certain as will be explained below).
Lights
Turn on the parking lights as and operate the headlamp switch. Check that both headlights rotate to the up position. Leave the lights on for now. Block the photocell on the digital dash (it's the small, clear window above the speedometer at about 11 o'clock) and rotate the dimmer knob on the headlamp switch. The instrument panel should dim. If not, that's another big repair bill to make it work. Exit the vehicle and have the owner/dealer operate the bright/dim headlamp control as well as the turn signals. Do all the external lamps work (including the cornering lights when the turn signal lights are flashing)?
Air Conditioner and Radio
Return to the vehicle and turn on the air conditioner and radio. Place the headlamps on high beam. Switch the coolant temp/volts switch to volts and observe the reading. A reading of less than 11.5 volts with this load indicates potential alternator/battery problems. Turn off headlamps and parking lamps. Adjust the air conditioner and verify that it produces cold air. If the controller is the electronic variety, set the temperature to the lowest setting (press the cool button until the display will not indicate any lower) and observe that the A/C fan goes into its highest setting. Then press the warm button until the fan speed drops back. Observe the indicated reference temperature and determine if you agree that the setting approximately matches the actual ambient temperature in the vehicle. If so, the controller and A/C appear to be OK. Turn the radio off. Check that the antenna retracts. Turn it back on and verify the antenna fully extends and that the radio works on both the AM and FM band plus make certain that all speakers work. You should be able to place the volume control to 1/2 to 3/4 fully clockwise and the speakers should not distort the sound. The engine should be at or near operating temperature.
Oil and temperature gauges
Check the idle oil pressure and temperature plus the coolant temperature. (If they are not at operating temperature yet, check them later but do make sure the sensors are giving you an output. Note that you will get a red warning light if the oil pressure is low. It should never be low except at the instant of startup and then only for a second or so). Exit the vehicle and (if an automatic) pull the transmission dipstick. Make certain the transmission fluid is at a proper level. If the car is a manual transmission, have the owner/dealer slowly engage the clutch while you listen for any chattering sound or observe any tendency for the car to lurch as the clutch is slowly engaged which may indicate a slipping clutch.